I recall the game of thrones episode where this guy is telling a really old and well-known joke, and when he gets to the punchline, basically everybody in the room can't help but blurt it out before he can.

Or if you're in line and the cashier can't ring up your stuff for some technical reason, and you blurt out "well, I guess it must be free, huh?" But they have heard that one ever single day since they started.

Even I, paragon of ...uh... stuff... I once cracked a joke in the TSA line.

I would just imagine that most of this is human nature and I expect graduating to a higher level of power and responsibility has the same sort of well-traveled detours.